# Window current transformer

Canonical URL: https://eloragrid.ai/objects/ga-window-current-transformer
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: GA
Drawing use: GA, Schematic
Reference families: Manufacturer

A window CT surrounds a conductor or busbar to provide the specified current measurement.

## What it represents

A window CT surrounds a conductor or busbar to provide the specified current measurement.
Coordinate aperture, primary conductor position and secondary terminal access. The GA locates the physical item; the associated schematic or equipment schedule records its electrical interfaces.
The preview is independent educational geometry and is not a manufacturer outline, fabrication drawing or verified standard graphic. Obtain the applicable model drawing from the cited official source before making a dimensional layout.

## How to read it

- Coordinate aperture, primary conductor position and secondary terminal access.
- Aperture fit does not establish ratio, class or protection suitability.

## Information to show or reference

- Confirm the exact equipment identity, drawing revision and installation orientation.
- Coordinate aperture, primary conductor position and secondary terminal access.
- Cross-reference the terminals, cable routes and service tasks with the equipment schedule.

## Important distinction

Aperture fit does not establish ratio, class or protection suitability.

## Facts

- Record type: Generic equipment / layout object
- Drawing role: Physical location and interface coordination
- Dimensions: Not specified here; use the selected manufacturer drawing
- Artwork: Original conceptual envelope; unitless and not to scale

## Public references

- [Indoor current and voltage transformers](https://www.abb.com/gb/en/areas/electrification/medium-voltage/grid-components/core-components/indoor-instrument-transformers) — ABB. Public manufacturer or design reference relevant to this equipment class.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.